I asked plantmessenger group{yahoo} and received some help.First you dont cut off dead floer heads{the seeds are under the flower heads}Second you let the stem turn brown.When the stem is brown you may harvest your seeds.Next you dry your seeds then store them in an airtight container until its time to plant them.If someone wants to make a sticky out of this you may.Enjoy

Another helpful hint is to put a piece of chalk in your container. It helps absorb any excess moisture. Or you can use those little nitrogen packs in vitamins/shoes/etc. Just be sure not to let kids play with/eat them!

Psalm 13
How long, O Lord? Will you forget me forever?How long will you hide your face from me? 2 How long must I take counsel in my soul
and have sorrow in my heart all the day?....because I am shaken. 5 But I have trusted in your steadfast love;
my heart shall rejoice in your salvation. 6 I will sing to the Lord,
because he has dealt bountifully with me.

Amanda has it right for the tomato seeds. It's called fermenting the seeds and you can stick them in any sort of container, it doesn't have to be a jar. I plop the seeds and juices just in a custard cup and set them on the kitchen counter. After the first 24 hours or so, I drain off any liquid twice a day and keep going until all the jelly-like bits have turned to liquid and I've drained it away. Then I rinse them well and lay them out on a towel to dry for a bit. When they seem dry, I transfer them to a paper towel or piece of absorbant scrap paper and set them aside for a week or two where they can dry out thoroughly before going into a package for storage.

The New Seed-Starters' Handbook by Nancy Bubel is an excellent book on both saving and starting seeds of all sorts. It covers flowers, veggies and trees quite thoroughly and it's my go-to book for sure. I've learned tricks in there that I have yet to see in online guides or other gardening books. Love it!

A variety of opinions and ideas are shared on GCM. Personal experiences, suggestions, and tips found here are in no way intended to substitute for medical counsel from a healthcare professional. Always use your own good judgement and seek professional advice when in doubt about a health concern.